Over 30 in boxing is getting on the older side. The fact Pacquiao and Hatton are intheir early 30's ok. When your in your mid 30''s, that when most fighters will turn old overnight.

When Hatton fought Tszyu, I saw the man turn old before my eyes. Didnt even resemble the guy he used to be. And he still made it to the stool in round 11 before quitting. In De La Hoya's case, he quit in round 6 or whatever it was, just like Tyson. Mosely needed steroids to beat Oscar in a rematch. Tszyu needed a cane to get to the ring at 2am, and still Hatton had a rough fight mugging an old guy in the early morning.